Q:

How do I check the transmission-fluid level on a Mercedes 300E?

A:

Quick Answer

To check the transmission fluid level, find the dipstick, remove it completely, and wipe it with a rag before pushing the dipstick back into the transmission all the way and removing it again. The point that the fluid reaches on the tip of the dipstick will show your fluid level.

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Full Answer

  1. Warm the engine

    Making sure that the Mercedes is parked on level ground, start the engine, and allow it to run for a little while until it's warm. Check your owner's manual to see if the engine should be off when checking the fluid levels, but leave the engine running, if possible.

  2. Find the dipstick

    The transmission fluid dipstick is located at the back of the engine. Don't mistake it for the engine oil dipstick, which looks similar but is much shorter. Pull it out all the way, and wipe it clean with a rag.

  3. Check the fluid level

    After wiping the dipstick, push it back into the transmission all the way down, and pull it out again. Look at the tip of the dipstick to find the transmission fluid level. There may be two different "full" lines, in which case you would check the one marked "warm." If the fluid level does not come up to this line, add more transmission fluid.

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